<div class="legend-grid">
	<div style="grid-column: 1; grid-row: 1">
		<span class="legend-rect" style="background: #ffb3b3"></span>parallel
	</div>
	<div style="grid-column: 1; grid-row: 2">
		<span class="legend-rect" style="background: #ffd2b3"></span>sequential
	</div>
	<div style="grid-column: 1; grid-row: 3">
		<span class="legend-rect" style="background: #fff2b3"></span>first
	</div>
	<div style="grid-column: 2; grid-row: 1">
		<span class="legend-rect" style="border-color: #000"></span>async
	</div>
	<div style="grid-column: 2; grid-row: 2">
		<span class="legend-rect" style="border-color: #f00"></span>sync
	</div>
</div>
